Urination
Urination
Urination (also known as voiding, micturition, peeing, and pissing) is the release of urine from the urinary bladder through the urethra to the outside of the body. It is a vital part of the body's waste disposal and water regulation systems.
Pronunciation
Urination: /ˌjʊərɪˈneɪʃən/
Etymology
The term "urination" comes from the Latin word "urina", which itself comes from the Greek word "ouron", both meaning "urine".
Process
Urination is initiated by the brain in response to the stretching of the bladder as it fills with urine. The process involves several steps, including the contraction of the detrusor muscle, relaxation of the urethral sphincter, and the actual expulsion of urine.
Related Terms
- Urinary system: The organ system that produces, stores, and eliminates urine.
- Urethra: The duct through which urine is discharged from the bladder and out of the body.
- Detrusor muscle: The muscle of the urinary bladder wall that contracts to expel urine from the bladder.
- Urethral sphincter: The muscular mechanism that controls the retention and release of urine from the bladder.
- Incontinence: The inability to control urination.
- Urinary tract infection: An infection in any part of the urinary system, which can sometimes interfere with normal urination.
See Also
- Urinary incontinence
- Urinary tract infection
- Urinary system
- Urethra
- Detrusor muscle
- Urethral sphincter
External links
- Medical encyclopedia article on Urination
- Wikipedia's article - Urination
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